1. The CAAC saw the flight cuts as concrete steps to cool the overheating development of air transport which aggravated flight delays.
2. The way out can be reached by scaling a flight of 100 slippery steps, followed by a longish dark tunnel.
3. 911查询·英语单词
3. A flight of steps leads to the ledge and less than 10 people can fit on it at any one time.